Monkey-wrench.



No. 746.712. PATENTEDDEC'. 15. 1903.

S. E. LANDIS.

MONKEY WRENCH.

APPLICATION FILEi') JUNE 20, 1903.

H0 KODEL.

Patented December 15, 1 903.

PAT NT OFFICE.

SAMUEL EICHMAN LANDIS, OF CUMBERLAND, MARYLAND.

MONKEY-WRENCH.

SPECIFICATION forming part of Letters Patent No. 746,712, dated December15, 1903.

Application filed June 20, 1903. Serial No. 162.316. (No mod l.)

.To aZZ whom it may concern:

Be it known that I, SAMUEL EICHMAN LAN- DIS, a citizen of the UnitedStates, residing at Cumberland, in the county of Allegany and State ofMaryland, have invented certain new and useful Improvements inMonkey-Wrenches, of which the following is a specification. I

This invention relates to wrenches, and more particularly to that classknown as monkey-wrenches.

The object of the invention is to produce a wrench of this generalcharacter, in which the movable jaw may be approximately adjusted uponthe shank independently of the usual screw-threaded adjusting devicesand subsequently may be given a finer adjustment by means of suchcoacting threaded members to secure that exact positioning of the fixedand movable jaws relatively to each other necessary in a perfectlyoperated wrench of this class.

Furthermore, the object of the invention is to produce a wrench having amovable jaw that can be easily and quickly adjusted to the dilferentpositions required.

Finally, the object of the invention is to produce a wrench of thecharacter noted which will possess advantages in points of simplicity,ease of manipulation, combined with strength and durability.

With the foregoing and other objects in view the invention consists inthedetails of construction and in the arrangement and combination ofparts to be hereinafter more fully set forth and claimed.

In describing the invention in detail reference will behad to theaccompanying drawings, forming part of this specification,'wherein likecharacters denote corresponding parts in both views, and in which-Figure l is a view in elevation of a wrench embodying the invention.Fig.2 is a similar view, partly in section, showing the lever and thethumb-nut carried by the lever.

In the drawings, A denotes the shank of an ordinary monkey-wrench whichis provided with transversely-arranged teeth B upon the inner edge orWorking face of the shank, and a fixed or stationary jaw is formedintegral therewith at one end and at the opposite end a handle issuitably secured. A movable jaw E is freely reciprocatory along saidshank and provided with a recess in its upper part in which a lever F ispivotally secured by means of a screw G threaded in the side of themovable jaw and through an aperture in the end of the lever. The leveris also provided with screw-thread at one end, upon which a thumb-nut His threaded, said thumb-nut having itsperipheral edge adapted to seat.between the teeth of the shank, and to prevent the accidentaldisengagement of the thumbnut and lever I provide a small screw 1, whichis threaded in the end of the lever. A spring J is secured in the recessof the movable jaw and so that the tension of the spring will be exertedagainst the lever, which will prevent the thumb-nut from becomingaccidentally disengaged from the teeth of the rack without the aid ofthe operator and at the same time will hold the thumb-nut in rigidengagement with the teeth of the rack.

It will be apparent that by the described construction of the fixed andmovable members of the wrench and their operating and adjusting devicesrelatively to one another a very simple and compact tool is formed andone in which very great strength and durability are combined withextreme lightness; also, that-the fixed and movable jaws are capable ofrapid and perfect adjustment relatively to each other, and that thenecessity of. adjusting the movable jaw from end to end of the shank bythe slow'process of rotating an adjusting-nut, as in the case of mosttools of this class, is obviated, as the operator may lift the thumb-nutout of engagement with the teeth of the shank and manipulate the jawaccording to any size not or article desired, and at the same time maygive the same a finer adjustment by rotating the thumb-nut on thethreaded end of the lever.

The construction, operation, and ad vantages it is thought will beunderstood from the foregoing description, it being noted that variouschanges may he made in the proportions and details of constructionwithoutdeparting from the scope of the invention.

. Having fully described my invention, what I claim as new,and desire tosecure by Letters Patent, is-

In a wrench the-combination with a shank the thumb-nut in engagementwith the teeth having a fixed jaw at one end and suitable of the shank.IO teeth formed on its inner edge,a movable jaw In testimony whereof Iaffix my signature having a recess in its upper portion, a lever inpresence of two witnesses.

5 having an aperture at one end and provided SAMUEL EIOHMAN LANDIS.

with screw-thread at its opposite end pivoted Witnesses: in the recess,a thumb-nut carried by the le- W. M. DAVIS,

ver and spring-actuated means for holding G. E. METZ.

